crypto-bigint 0.7.2

Pure Rust implementation of a big integer library which has been designed from the ground-up for use in cryptographic applications. Provides constant-time, no_std-friendly implementations of modern formulas using const generics.
Documentation 
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use crate::{Odd, Uint};

pub(crate) const fn sub_montgomery_form<const LIMBS: usize>(
    a: &Uint<LIMBS>,
    b: &Uint<LIMBS>,
    modulus: &Odd<Uint<LIMBS>>,
) -> Uint<LIMBS> {
    a.sub_mod(b, modulus.as_nz_ref())
}